UGC NET Questions (Paper – 1)

Statements D and E are wrong, while A, B, C and F are correct. A and B correctly describe the truth conditions for conjunction and inclusive disjunction, and C accurately symbolises the exclusive “either–or”. F is true because truth tables are standard tools for checking validity. D mistakenly describes a tautology instead of a contradiction, and E wrongly describes the condition for a contingent statement rather than a tautology, so these two are the wrong statements.

Option A:
Option A is incorrect because it singles out only D as wrong and ignores E, which also misrepresents the definition of a tautology. Since both D and E give inverted definitions, treating only one of them as wrong undercounts the errors. Therefore this option does not match the full set of wrong statements.

Option B:
Option B is also incomplete, as it selects only E and ignores D. D is clearly false because a contradiction is never true in any assignment, not always true. By failing to include D, this option again fails to capture all wrong statements listed.

Option C:
Option C is correct because it groups exactly D and E, the two statements that invert the standard meanings of contradiction and tautology. It leaves A, B, C and F untouched, all of which correctly describe truth-functional connectives and the use of truth tables. This combination therefore matches the required set of wrong statements.

Option D:
Option D is wrong because it adds B, which is a correct description of inclusive disjunction, to the set of wrong statements. B rightly states that “p or q” is false only when both p and q are false. Including B beside the genuinely wrong D and E makes the option logically inconsistent.

Statements A, B and C are all correct. A notes the common natural-language use of “either” as exclusive. B is true because the standard logical disjunction is inclusive and allows both A and B to be true. C correctly gives a formula for exclusive-or using OR, AND and NOT. D is false since exam questions may clarify whether the sense is inclusive or exclusive, and E is false because inclusive and exclusive or differ when both A and B are true. Hence, A, B and C only are correct.

Option A:
Option A is incomplete since it omits C, thereby failing to mention the formal definition of exclusive-or in terms of other connectives, which is important in logical reasoning.

Option B:
Option B is incorrect because it incorrectly includes D, which claims that exam usage is always exclusive, and so introduces a false constraint on interpretation.

Option C:
Option C is correct as it combines natural-language usage, the inclusive logical meaning and the formal construction of exclusive-or, while excluding D and E, which misstate exam conventions and truth-value patterns.

Option D:
Option D is wrong since it includes E, which wrongly claims that inclusive and exclusive or always agree, and it drops A, losing the important point about everyday interpretation.

Statements A, B, C, D and F correctly describe how common connectives are handled when mapped into logic, while E is false. “Either p or q” is often inclusive in exams unless exclusivity is clearly indicated, and “neither…nor…” translates naturally as a conjunction of negations. The pattern for “exactly one” uses both disjunction and the negation of conjunction, and “both p and q” is simply conjunction. Because natural language “or” is context-sensitive, misreading it can cause mistakes, so F is right and E, which claims uniformity in all contexts, is wrong.

Option A:
Option A is incomplete as it leaves out F, which highlights the practical consequence of misinterpreting these connectives in exam situations. While A, B, C and D give accurate translations, they do not address how errors in interpretation affect performance. Thus A, B, C and D only does not fully answer the question.

Option B:
Option B is wrong because it includes E, which falsely states that natural language “or” always matches inclusive disjunction. In reality, “or” can be exclusive in many everyday contexts, so accepting E misrepresents typical usage. Including a false statement means this combination cannot be correct.

Option C:
Option C is incorrect since it omits A and includes only B, C, D and F. Without A, the usual exam practice regarding the interpretation of “either…or…” is not mentioned, which is central to the question. Consequently, this option does not contain all of the correct statements in the list.

Option D:
Option D is correct because it collects all the true statements A, B, C, D and F and properly excludes E, which overgeneralises about the meaning of “or”. It provides both the formal translations and the warning about misinterpretation in UGC NET reasoning.

An exclusive “or” implies that choosing one option rules out the other. Examination instructions that say you may answer in English or in Hindi usually mean that you must choose exactly one language for your answer sheet. Answering in both languages is typically not allowed. Thus, the “or” is naturally interpreted as exclusive, indicating a choice between alternatives.

Option A:
Option A invokes a testing context where using both options would violate the implicit rule, so the disjunction is best read as “one but not both,” which captures exclusivity.

Option B:
Option B is often inclusive in practice; some exams allow both a pen and a pencil, so the context does not clearly exclude taking both.

Option C:
Option C can also be inclusive, since meetings can sometimes be open to both students and teachers together.

Option D:
Option D explicitly allows “both,” making the “or” inclusive by directly stating that dual use is possible.

All five statements are correct: they distinguish inclusive vs exclusive “or”, stress context, warn about wrong exclusivity assumptions, and reflect exam expectations. Therefore A–E are all true.

Option A:
Option A is incomplete because it omits E (explicit exam expectation).

Option B:
Option B is incomplete because it omits D (a common reasoning pitfall).

Option C:
Option C is correct because it includes all true statements (A–E).

Option D:
Option D is incorrect because it omits A (everyday “either–or” can be inclusive).

Statements A, C, D and E correctly describe how “and”, “or” and “unless” are typically handled in reasoning questions, whereas B and F are false. Conjunction requires both parts to be true, and “or” is usually read inclusively unless there is strong contextual pressure otherwise. “P unless q” is standardly taken as “if not q then p”, and misreading these connectives often leads to wrong options being chosen. B incorrectly makes “or” always exclusive, and F ignores the interpretative work needed when mapping language to logic. Therefore A, C, D and E only is the correct combination.

Option A:
Option A is incomplete because it omits D and E, leaving out both the usual translation of “unless” and the warning about misinterpretation. While A and C are true, they do not capture the full complexity of how connectives work in questions. Thus this option is not sufficient.

Option B:
Option B is also incomplete, as it fails to include E and therefore misses the explicit link between misreading connectives and exam errors. A, C and D are correct but do not mention the consequences of misinterpretation. Hence this option cannot be accepted.

Option C:
Option C is wrong since it omits A and includes only C, D and E. Without A, the basic treatment of “and” is missing, which is a key connective in reasoning. The omission makes the description of connectives less complete.

Option D:
Option D is correct because it gathers all relevant true statements about the interpretation of these connectives while excluding B and F, which exaggerate exclusivity and perfect matching between language and logic. It thus matches both logical theory and exam practice.